野蛮 发表于 2025-3-28 15:14:55
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Child Miners in Cajamarca, Peru, this phenomenon came principally from theoretical work (Weertman, 1957, 1958, 1962; L. Lliboutry, 1959, 1963). The situation now is changing. B. Kamb and E. LaChapelle (1963, 1964) have carried out extremely interesting field studies and laboratory tests on the mechanisms involved in glacier slidin蛛丝 发表于 2025-3-29 11:51:36
Introduction,reater than it does at present has been widely accepted for over 100 years. Gradually, it has come to be recognised that moving ice is one of the major sculptors of the earth’s surface; indeed, evidence is accumulating to suggest that, quantitatively, it may be the most potent agent of terrestrial e征服 发表于 2025-3-29 18:00:01
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Crescentic Gouges on Glaciated Surfaces,(1888) in his ‘Rock-scorings of the great ice invasions’. The three principal types are chatter-marks, crescentic cracks, and crescentic gouges. All of these are so associated with glacial sculpture and striation as to indicate that they are of glacial origin. They all occur characteristically in se唤起 发表于 2025-3-30 07:14:18
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